CN218790573U

CN218790573U - Heating assembly, aerosol-generating device and aerosol-generating system

Info

Publication number: CN218790573U
Application number: CN202222469115.8U
Authority: CN
Inventors: 梁峰; 郭玉; 杜贤武; 李洪; 刘小力; 冼小毅; 李欢喜; 邓原冰
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-04-07
Anticipated expiration: 2032-09-16

Abstract

The application provides a heating element, an aerosol-generating device and an aerosol-generating system. This heating element includes: a housing structure, a heating film, and a power supply electrode. The containment structure has a proximal opening for containing the aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article; the heating film is covered on the containing structure in a surface shape and used for heating the containing structure when electrified; the heating film is configured to have different power densities on both sides of a midpoint in the length direction of the accommodating structure; the power supply electrode is electrically connected to the heating film to supply power to the heating film. The heating assembly effectively improves the heating efficiency, has better heating uniformity, and avoids the problem of being burnt due to local high temperature of aerosol generating products; meanwhile, the temperature field can be designed according to expectation, and the positions of other asymmetrical high-temperature regions can be conveniently designed.

Description

Heating assembly, aerosol-generating device and aerosol-generating system

Technical Field

The utility model relates to an electronic atomization technical field especially relates to a heating element, aerosol generate device and aerosol generate system.

Background

Heat Not Burning (HNB) aerosol generating devices are gaining increasing attention and interest due to their advantages of safe, convenient, healthy, environmental friendly use.

Existing non-combustible heat aerosol generating devices generally include a heating assembly and a power supply assembly; wherein the heating assembly is configured to heat and atomize the aerosol-generating article upon energization to form an aerosol; the power supply assembly is connected with the heating assembly and used for supplying power to the heating assembly.

However, existing heating assemblies have a relatively low heating efficiency, a relatively large temperature differential between the interior and exterior of the aerosol-generating article, and relatively poor heating uniformity. In addition, when the existing heating assembly is used for heating, the high-temperature area is positioned in the central area of the heating body, the speed of generating aerosol is slow, the temperature field cannot be designed according to expectation, and the positions of other asymmetrical high-temperature areas cannot be designed conveniently.

SUMMERY OF THE UTILITY MODEL

The application provides a heating assembly, an aerosol generating device and an aerosol generating system, which aim to solve the problems that the existing heating assembly is low in heating efficiency, large in temperature difference between the inside and the outside of an aerosol generating product and poor in heating uniformity; and the high-temperature area is positioned in the central area of the heating body, so that the temperature field cannot be designed according to expectation, and the position of other asymmetrical high-temperature areas cannot be designed conveniently.

In order to solve the technical problem, the application adopts a technical scheme that: a heating assembly is provided. This heating element includes: a containing structure, a heating film and a power supply electrode; wherein the containment structure has a proximal opening for containing an aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article; the heating film is covered on the containing structure in a surface shape and used for heating the containing structure when electrified; the heating film is configured to have different power densities on two sides of the midpoint of the length direction of the accommodating structure; the power supply electrode is electrically connected to the heating film to supply power to the heating film.

Optionally, a plane perpendicular to the length direction of the receiving structure and passing through the midpoint divides the surface of the receiving structure into a first area and a second area; the second region is located on a side of the first region facing away from the proximal opening; the heating film has a resistance density per unit area in the first region different from a resistance density per unit area in the second region.

Optionally, the heating film comprises:

a first heating section provided in the first region;

the second heating part is arranged in the second area and is arranged at intervals with the first heating part along the length direction of the accommodating structure; and the first heating part and the second heating part both extend along the circumferential direction of the accommodating structure.

Optionally, the first heating part and the second heating part are arranged around the circumference of the accommodating structure in a circle, the material and the thickness of the first heating part and the second heating part are the same, and the widths of the first heating part and the second heating part in the length direction of the accommodating structure are different.

Optionally, a plane perpendicular to the length direction of the receiving structure and passing through the midpoint divides the surface of the receiving structure into a first area and a second area; the second region is located on a side of the first region facing away from the proximal opening;

the heating film is a continuous film layer structure, part of the heating film is located in the first area, and the rest part of the heating film is located in the second area.

Optionally, the heating film is arranged around the circumference of the containing structure in a circle, and the material and the thickness of the heating film are uniform; the width of a portion of the heating film located in the first region is different from the width of a portion of the heating film located in the second region.

Optionally, a width of a portion of the heating film located in the first region is larger than a width of a portion of the heating film located in the second region.

Optionally, the heating film is rectangular after being unfolded along the circumferential direction of the accommodating structure.

Optionally, the supply electrode comprises:

a first electrode including a first feeding portion and a first extension portion; the first power supply part is positioned at a first end of the accommodating structure, and the first extension part extends from the first power supply part along the length direction of the accommodating structure and is in contact with the part of the heating film positioned in the first area and the part of the heating film positioned in the second area so as to realize electric connection;

the second electrode is arranged at a distance from the first electrode and comprises a second power supply part and a second extension part; the second power supply part is positioned at the first end or the second end of the accommodating structure, the second extending part extends from the second power supply part along the length direction of the accommodating structure and is in contact with the part of the heating film positioned in the first area and the part of the heating film positioned in the second area so as to realize electric connection; and along the circumferential direction of the accommodating structure, the second extension part is at least partially overlapped with the first extension part.

Optionally, the second power supply portion is located at a first end of the receiving structure, and the first extending portion and/or the second extending portion extend from the first end of the receiving structure to a second end of the receiving structure.

Optionally, the second power supply portion is located at a second end of the accommodating structure, and the first extending portion extends from the first power supply portion to a position of the accommodating structure close to the second end and is spaced apart from the second power supply portion;

the second extending part extends from the second power supply part to a position, close to the first end, of the accommodating structure and is arranged at an interval with the first power supply part.

Optionally, the supply electrode comprises:

the first electrode is arranged at the first end of the accommodating structure, extends around the circumferential direction of the accommodating structure, and is electrically connected with the first end of the heating film along the length direction of the accommodating structure;

the second electrode is arranged at the second end of the accommodating structure, extends around the circumferential direction of the accommodating structure, and is electrically connected with the second end of the heating film along the length direction of the accommodating structure;

a third electrode disposed between the first electrode and the second electrode along a length direction of the receiving structure, extending around a circumferential direction of the receiving structure, and electrically connected to the heating film; wherein a width of the heating film between the first electrode and the third electrode is different from a width of the heating film between the second electrode and the third electrode.

Optionally, the receiving structure comprises:

a substrate having a hollow tubular shape for receiving the aerosol-generating article;

a radiation layer disposed on a surface of the substrate for radiating infrared light when heated to heat the aerosol-generating article.

Optionally, the radiation layer is arranged on the inner surface of the side wall of the base body, and the heating film is arranged on the side of the base body, which faces away from the radiation layer; or

The radiation layer set up in the surface of the lateral wall of base member, the heating film set up in the radiation layer deviates from one side of base member.

Optionally, the receiving structure comprises:

a base body having a hollow tubular shape and including a main body and an infrared radiation material dispersed in the main body; the substrate is for receiving an aerosol-generating substrate and, when heated, radiates infra-red to heat the aerosol-generating article;

wherein the heating film and the electrode are disposed on a side where an outer surface of the sidewall of the base body is located.

Optionally, the substrate is a quartz tube.

Furthermore, in order to solve the above technical problem, the present application also provides an aerosol-generating device. The aerosol-generating device comprises a power supply assembly and a heating assembly as described above; the power supply assembly is electrically connected with the heating assembly and used for supplying power to the heating assembly.

Furthermore, to solve the above technical problem, the present application also provides an aerosol-generating system. The aerosol-generating system comprises the aerosol-generating device and an aerosol-generating article described above.

Optionally, the aerosol-generating article is housed within a containment structure of the aerosol-generating device and is in direct contact with an inner surface of a sidewall of the containment structure; alternatively, the aerosol-generating article is housed within the containment structure and is spaced from an inner surface of a sidewall of the containment structure.

The heating assembly is provided with a containing structure and a heating film, the heating film is covered on the containing structure in a surface shape, the containing structure is heated when the heating film is electrified, the containing structure is heated to radiate infrared rays, and the aerosol generating product contained in the containing structure is heated and atomized by the infrared rays. Wherein, through infrared heating's mode, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve the preheating efficiency of aerosol generation goods, and can effectively reduce the inside and outside temperature difference of aerosol generation goods to it is more even to the toast of aerosol generation goods, avoids appearing local high temperature and leads to aerosol generation goods to be burnt problem. Meanwhile, by arranging the heating film so that the power densities on both sides of the midpoint in the longitudinal direction of the housing structure are different, it is possible to design a temperature field as desired, and to design other asymmetric high-temperature region positions easily.

Drawings

Figure 1 is a schematic structural diagram of an aerosol-generating system provided by an embodiment of the present application;

figure 2 is a schematic structural view of an aerosol-generating device provided by an embodiment of the present application;

FIG. 3 is a transverse cross-sectional view of a heating assembly provided in accordance with a first embodiment of the present application;

FIG. 4 is a transverse cross-sectional view of a heating assembly provided in an embodiment of the present application;

figure 5 is a schematic view of an aerosol-generating article housed in a containment structure provided by an embodiment of the present application;

figure 6 is a schematic view of an aerosol-generating article housed in a containment structure according to another embodiment of the present application;

FIG. 7 is a perspective view of a heating assembly according to an embodiment of the present application from a first perspective;

FIG. 8 is a perspective view of the heating assembly of FIG. 7 from a second perspective;

FIG. 9 is a plan view of the heating assembly of FIG. 7;

FIG. 10 is a perspective view of a heating assembly according to another embodiment of the present application from a first perspective;

FIG. 11 is a perspective view of the heating assembly of FIG. 10 from a second perspective;

FIG. 12 is a plan view of the heating assembly of FIG. 10;

fig. 13 is a schematic diagram illustrating positions of a first electrode and a second electrode on a receiving structure according to an embodiment of the present application;

fig. 14 is a schematic diagram of positions of a first electrode and a second electrode on a receiving structure according to another embodiment of the present application;

fig. 15 is a schematic diagram illustrating positions of a first electrode and a second electrode on a receiving structure according to yet another embodiment of the present application;

fig. 16 is a schematic diagram illustrating positions of a first electrode and a second electrode on a receiving structure according to still another embodiment of the present application;

FIG. 17 is a transverse cross-sectional view of a heating assembly provided in accordance with a second embodiment of the present application;

FIG. 18 is a transverse cross-sectional view of a heating assembly provided in accordance with another embodiment of the present application;

fig. 19 is a transverse cross-sectional view of a heating assembly provided in accordance with a third embodiment of the present application.

Description of reference numerals:

an aerosol-generating device 1; an aerosol-generating article 2; a heating assembly 10; a power supply assembly 20; a housing structure 11; a base 111; a receiving cavity 110; a first end a; a second end b; a radiation layer 112; a first insulating layer 113; a second insulating layer 114; heating the film 12; a first heating part 121; a second heating part 122; a feeding electrode 13; a first electrode 131; a first power supply section 1311; a first extension 1312; a second electrode 132; a second power supply portion 1321; a second extension 1322; a third electrode 133; a midline plane M; a first region A; a second region B.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying a number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. In the embodiment of the present application, all directional indicators (such as up, down, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components, the motion situation, etc. at a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic view of an aerosol-generating system according to an embodiment of the present disclosure;

in the present embodiment, an aerosol-generating system is provided comprising an aerosol-generating device 1 and an aerosol-generating article 2 housed within the aerosol-generating device 1. Wherein the aerosol-generating device 1 is used to heat and atomise the aerosol-generating article 2 to form an aerosol for inhalation by a user. The aerosol generating device 1 can be used in the technical fields of medical treatment, cosmetology, health care, electronic atomization and the like; the specific structure and function of which can be seen in the description of the aerosol-generating device 1 provided in the examples below. The aerosol-generating article 2 may employ a solid substrate and may comprise one or more of a powder, granules, shreds of pieces, strips or flakes of one or more plant leaves such as tobacco, vanilla leaves, tea leaves, mint leaves and the like; alternatively, the solid matrix may contain additional volatile flavour compounds to be released when the matrix is heated. Of course, the aerosol-generating article 2 may also be a liquid or paste-like substrate, such as oils, liquid medicines, etc. to which the aroma component is added.

Referring to fig. 2, fig. 2 is a schematic view of an aerosol-generating device 1 according to an embodiment of the present disclosure;

in the present embodiment, an aerosol-generating device 1 is provided, the aerosol-generating device 1 comprising a heating assembly 10 and a power supply assembly 20. Wherein the heating assembly 10 is for receiving and atomising the aerosol-generating article 2 when energised to produce an aerosol; the specific structure and function of the heating assembly 10 can be seen in the heating assembly 10 according to any of the following embodiments. The power supply assembly 20 is electrically connected to the heating assembly 10 for supplying power to the heating assembly 10. The power supply component 20 may specifically be a lithium ion battery.

Referring to fig. 3, fig. 3 is a transverse cross-sectional view of a heating element 10 according to a first embodiment of the present application; in a first embodiment, a heating assembly 10 is provided. The heating assembly 10 comprises a containment structure 11, a heating film 12 and a power supply electrode 13 (see fig. 9 below).

Referring also to fig. 9, the receiving structure 11 includes a base 111 and a radiation layer 112. The base 111 is hollow and tubular, and the base 111 has a receiving cavity 110 and a proximal opening and a distal opening communicating with the receiving cavity 110, and the proximal opening and the distal opening are oppositely arranged along a length direction C of the base 111. The housing cavity 110 is for housing the aerosol-generating article 2; the aerosol-generating article 2 is specifically received within the receiving cavity 110 or removed from the receiving cavity 110 through the proximal end opening along the length direction C of the receiving cavity 110. Wherein the proximal opening is the end of the heating assembly 10 near the mouthpiece. Specifically, the base 111 may be a hollow tubular structure, and the hollow tubular structure is surrounded to form the receiving cavity 110. Specifically, the outer diameter of the base 111 is uniform along the length direction C thereof; the substrate 111 may be embodied in a hollow cylindrical shape.

Specifically, the substrate 111 may be made of an insulating material, for example, the substrate 111 may be a quartz tube, a ceramic tube, a mica tube, or the like. Preferably, the substrate 111 may be a transparent quartz tube to facilitate the infrared rays to pass through. Of course, the substrate 111 may be made of non-insulating material, such as stainless steel, aluminum, etc.

The radiation layer 112 is disposed on an inner surface of a sidewall of the base 111, and is configured to radiate infrared rays when heated, so as to heat and atomize the aerosol-generating article 2 accommodated in the accommodation chamber 110 by using the infrared rays. Above-mentioned utilize infrared heating aerosol to generate goods 2, because the infrared ray has certain penetrability, does not need the medium, heating efficiency is higher, can effectively improve aerosol and generate preheating efficiency of goods 2, reduces aerosol and generate the inside and outside temperature difference of goods 2 to make the toasting of aerosol generation goods 2 more even, avoid appearing local high temperature and lead to aerosol generation goods 2 by the problem of scorching. Meanwhile, by disposing the radiation layer 112 on the inner surface of the base 111, the infrared rays radiated by the radiation layer 112 can be directly radiated to the aerosol-generating article 2 without passing through the base 111, and the utilization rate of the infrared rays is high.

The radiation layer 112 may be formed on the entire inner surface of the sidewall of the substrate 111 by silk-screen printing, sputtering, coating, printing, or the like. The radiation layer 112 may be specifically an infrared layer, and the material of the infrared layer includes at least one of high infrared emissivity materials such as perovskite system, spinel system, carbide, silicide, nitride, oxide, and rare earth system material.

Referring to fig. 3 and fig. 7, the heating film 12 covers the accommodating structure 11 in a planar shape. In an embodiment, the heating film 12 is disposed in a planar shape on a side of the base 111 away from the radiation layer 112, and extends along a circumferential direction of the receiving structure 11, so as to generate heat when being powered on, so as to heat the radiation layer 112, so that the radiation layer 112 is heated to radiate infrared rays. Specifically, the heating film 12 uses a resistive material that releases joule heat by being energized, such as a thick film printed resistive layer, a thin film printed resistive layer, a nano resistive layer, or the like. The planar heating film 12 is distinguished from a linear shape, and may have a rectangular, circular, square, or other irregular shape having a cross-sectional area after being developed in a planar shape.

As shown in fig. 3, when the substrate 111 is an insulating substrate, the heating film 12 is specifically disposed on a surface of the substrate 111 facing away from the radiation layer 112, and heat generated by the heating film 12 is conducted to the radiation layer 112 through the substrate 111 to heat the radiation layer 112. It is understood that in this embodiment, the heating film 12 is directly disposed on the surface of the housing structure 11, i.e., the heating film 12 is in direct contact with the surface of the housing structure 11. When the base 111 is a non-insulating base, it is preferable that the base 111 is made of a metal material, such as stainless steel, as shown in fig. 4, and fig. 4 is a transverse sectional view of the heating assembly 10 according to an embodiment of the present invention; a first insulating layer 113 resistant to high temperature is further formed on a surface of the base 111 on a side away from the radiation layer 112, and the heating film 12 is specifically arranged on a surface of the first insulating layer 113 on a side away from the base 111 to prevent a short circuit between the heating film 12 and the base 111; at this time, heat generated from the heating film 12 is thermally conducted to the radiation layer 112 through the first insulating layer 113 and the base 111 in order to heat the radiation layer 112. It is understood that, in this embodiment, the heating film 12 is disposed on the housing structure 11 through the first insulating layer 113, i.e., the heating film 12 is in indirect contact with the surface of the housing structure 11. In one embodiment, the first insulating layer 113 may be a glaze layer.

In this embodiment, to increase the heat utilisation of the heating assembly 10 to further increase the heating efficiency of the aerosol-generating article 2; referring to figure 5, figure 5 is a schematic view of an aerosol-generating article 2 according to an embodiment of the present application housed in a containment structure 11; when the aerosol-generating article 2 is received in the receiving cavity 110, the aerosol-generating article 2 is in direct contact with an inner surface of the side wall of the receiving structure 11 (e.g., the surface of the radiation layer 112). In this way, while infrared radiation is radiated into the aerosol-generating article 2 to heat the aerosol-generating article 2, the heat of the heating film 12 can be conducted to the aerosol-generating article 2 through the receiving structure 11 (e.g., the radiation layer 112) to further heat the aerosol-generating article 2, thereby improving the heat utilization efficiency, the atomization efficiency and the aerosol generation speed.

Of course, in other embodiments, as shown in fig. 6, fig. 6 is a schematic view of an aerosol-generating article 2 housed in a housing structure 11 according to another embodiment of the present application; the aerosol-generating article 2 may also be spaced from the inner surface of the side wall of the receiving structure 11 (e.g., the radiation layer 112) when the aerosol-generating article 2 is received in the receiving cavity 110 to prevent the radiation layer 112 from being scratched or scratched by the aerosol-generating article 2. It will be appreciated that in this embodiment, the aerosol-generating article 2 is heated primarily by infrared radiation. Further, the surface of the heating film 12 or/and the radiation layer 112 may be further coated with a protective layer, and the protective layer may specifically be a glaze layer. Wherein the thickness of the radiation layer 112 may be 10-100 microns. Preferably, the thickness of the radiation layer 112 is 20-40 microns. In this embodiment, the radiation layer 112 can be formed by thick film printing. The material of the radiation layer 112 may include one or more of black silicon, cordierite, transition metal oxide series spinel, rare earth oxide, ion co-doped perovskite, silicon carbide, zircon, and boron nitride. Of course, the thickness of the radiation layer 112 may also be 1-10 microns; preferably, the thickness of the radiation layer 112 is 1-5 microns. In this embodiment, the radiation layer 112 is embodied as a thin film coating. The radiation layer 112 material may be CrC, tiCN, diamond-like carbon film (DLC).

Specifically, the heating film 12 is disposed so that the power density is different on both sides of the midpoint in the longitudinal direction C of the housing structure 11; that is, the heat generated by the heating film 12 does not cause the high temperature region in the housing chamber 110 of the housing structure 11 to be located in the center region of the housing chamber 110 in the longitudinal direction C. This allows the temperature field of the containment structure 11 to be designed as desired, facilitating the design of other asymmetric high temperature zone locations.

In an embodiment, please refer to fig. 7 to 9, fig. 7 is a perspective view of a heating element 10 according to an embodiment of the present application from a first perspective view; FIG. 8 is a perspective view of the heating assembly 10 of FIG. 7 from a second perspective; FIG. 9 is a plan expanded view of the heating assembly 10 shown in FIG. 7; a midline plane M perpendicular to the length direction C of the receiving cavity 110 and passing through the midpoint divides the receiving structure 11 into a first region a and a second region B of equal area along the length direction C thereof. The first area a is close to the proximal opening of the base 111, and the second area B is located on a side of the first area a facing away from the proximal opening.

In this specific embodiment, the resistance density per unit area of the heating film 12 in the first region a is different from the resistance density per unit area of the heating film 12 in the second region B. In this way, after the heating film 12 is energized, the heating power of the first region a and the heating power of the second region B of the housing structure 11 are different from each other, and two regions having different temperatures can be formed in the first region a and the second region B of the housing structure 11. Meanwhile, the midline plane M is taken as a dividing line of the first area a and the second area B, so that the power density at two sides of the midpoint of the length direction C of the accommodating cavity 110 can be ensured to be different, and the design of other asymmetric high-temperature area positions is facilitated.

Specifically, in order to increase the heating rate of the heating assembly 10 near the proximal opening, the aerosol generation speed is increased; the area of the heating film 12 of the portion of the heating film 12 located in the first region a may be made larger than the area of the heating film 12 located in the second region B. In this way, after the heating film 12 is energized, the heating power of the first region a of the housing structure 11 is greater than the heating power of the second region B, so that when the areas of the first region a and the second region B are the same, the heating power density of the first region a is greater than the heating power density of the second region B, and correspondingly, the region where the inner surface of the base 111 of the first region a overlaps with the heating film 12 is also greater than the region where the radiation layer 112 of the second region B overlaps with the heating film 12, and the radiation layer 112 corresponding to the first region a has a higher temperature than the radiation layer 112 corresponding to the second region B, and radiates more infrared rays, so as to obtain the desired design effect that the temperature of the first region a of the housing structure 11 is higher than the temperature of the second region B, that is, the high-temperature region of the housing structure 11 is located in the first region a; the atomization efficiency of the part of the aerosol-generating product 2 corresponding to the first area a is effectively improved, and the generation speed of the aerosol is accelerated.

In a specific embodiment, as shown in fig. 9, the heating film 12 includes a first heating part 121 and a second heating part 122 which are disposed at intervals. The first heating part 121 is disposed in the first area a of the receiving structure 11; the second heating part 122 is disposed in the second region B of the receiving structure 11, and is spaced apart from the first heating part 121 in the longitudinal direction C of the receiving structure 11. In a specific embodiment, the first heating part 121 and the second heating part 122 are both rectangular, such as square and rectangular, after being unfolded along the circumferential direction of the accommodating structure 11; of course, it may also be circular, oval or other irregular patterns, preferably rectangular.

In a specific embodiment, the first heating part 121 and the second heating part 122 have the same material, thickness, and length, and have different widths in the C direction, so that the resistance of the first heating part 121 is different from that of the second heating part 122; here, it is understood that the lengths of the first heating part 121 and the second heating part 122 respectively refer to circumferences corresponding to when they are disposed around the substrate 111.

Specifically, as shown in fig. 7 or 8, the first heating part 121 and the second heating part 122 are each in a closed ring shape and are provided in a circle around the circumferential direction of the base 111. It is understood that, since the circumferential direction dimensions of the base 111 are the same, the length dimensions of the first heating portion 121 and the second heating portion 122 in the circumferential direction of the base 111 are also the same. Therefore, in this embodiment, as shown in fig. 9, the widths of the first heating part 121 and the second heating part 122 in the length direction C of the housing structure 11 may be made different to obtain the first heating part 121 and the second heating part 122 with different power densities.

Specifically, in order to obtain the desired design temperature field, even if the temperature of the first region a of the housing structure 11 is higher than the height of the second region B; a width of the first heating part 121 in the length direction C of the receiving structure 11 may be greater than a width of the second heating part 122 in the length direction C of the receiving structure 11.

In another embodiment, referring to fig. 10-12, fig. 10 is a perspective view of a heating assembly 10 provided in another embodiment of the present application from a first perspective; FIG. 11 is a perspective view of the heating assembly 10 shown in FIG. 10 from a second perspective; FIG. 12 is a plan view of the heating assembly 10 shown in FIG. 10; the heating film 12 is a continuous film structure, i.e. the heating film 12 is integrally formed. In this embodiment, a part of the heating film 12 is located in the first region a, and the remaining part is located in the second region B. As shown in fig. 12, the heating film 12 may be rectangular, such as square or rectangular, after being spread along the circumferential direction of the housing structure 11; of course, a circular, oval or other irregular pattern is also possible.

Wherein the material and thickness of each position of the heating film 12 are the same, and the cross-sectional area of the portion of the heating film 12 located in the first region a is different from the cross-sectional area of the portion of the heating film 12 located in the second region B; that is, the occupation ratios of the portions of the heating film 12 located in the first region a and the second region B are different so that the resistance of the portion of the heating film 12 located in the first region a is different from the watt density of the portion of the heating film 12 located in the second region B.

Specifically, the heating film 12 is also in a closed loop shape, and is provided around the circumferential direction of the base 111. As can be understood from the above, the heating films 12 have the same size in the circumferential direction of the base 111; in this specific embodiment, the width of the portion of the heating film 12 specifically located in the first region a is different from the width of the portion of the heating film 12 located in the second region B in the longitudinal direction C of the base 111, so that the resistance of the portion of the heating film 12 located in the first region a is different from the resistance of the portion of the heating film 12 located in the second region B.

In a specific embodiment, the width of the portion of the heating film 12 located in the first region a is greater than the width of the portion of the heating film 12 located in the second region B along the length direction C of the substrate 111; in this way, in the case that the material, the thickness, and the length of each position of the heating film 12 are the same, the resistance of the portion of the heating film 12 located in the first region a can be made smaller than the resistance of the portion of the heating film 12 located in the second region B, so that the heating power of the first region a is made larger than that of the second region B after the heating film 12 is energized; and under the condition that the areas of the first area A and the second area B are the same, the heating power density of the first area A is larger than that of the second area B, so that the partial atomization efficiency of the aerosol generating product 2 corresponding to the first area A is effectively improved, and the aerosol generating speed is accelerated.

Of course, in other embodiments, the resistance of the heating film 12 in the corresponding region may also be controlled by controlling the material or thickness of the heating film 12 in the corresponding region, and the present application is not limited thereto as long as it is ensured that the resistance of the portion of the heating film 12 in the first region a is different from the resistance of the portion of the heating film 12 in the second region B.

It will be understood by those skilled in the art that the receiving structure 11 may also be divided into a plurality of regions by using another plane or a plurality of parallel planes perpendicular to the length of the receiving cavity 110 as a dividing line. The widths of the portions of the heating film 12 where at least two of the plurality of regions are located along the length direction C of the housing structure 11 are different to form regions of different temperatures correspondingly; among the plurality of regions having different temperatures, the high-temperature region has a different power density from both sides of the midpoint of the accommodation chamber 110 in the longitudinal direction C.

The power feeding electrode 13 is electrically connected to the heating film 12 to feed power to the heating film 12. As the feeding electrode 13, a metal material having high conductivity such as silver, gold, copper, or an alloy containing gold, silver, and copper can be used.

In one embodiment, referring back to fig. 7-9, the power supply electrode 13 includes a first electrode 131 and a second electrode 132.

The first electrode 131 includes a first power supply part 1311 and a first extension part 1312. The first power supply portion 1311 is provided at the first end a of the housing structure 11, extends in the circumferential direction of the housing structure 11, and is spaced apart from the heating film 12. The first extension portion 1312 is electrically connected to the first power supply portion 1311, extends from the first power supply portion 1311 along the longitudinal direction C of the receiving structure 11, and contacts a portion of the heating film 12 located in the first region a and a portion located in the second region B to electrically connect to the heating film 12.

The second electrode 132 includes a second feeding portion 1321 and a second extension 1322. The second power supply portion 1321 is also located at the first end a of the housing structure 11, extends in the circumferential direction of the housing structure 11, and is disposed at an interval from the first power supply portion 1311. The second extension 1322 is electrically connected to the second power supply portion 1321, extends from the second power supply portion 1321 along the longitudinal direction C of the housing structure 11, and contacts a portion of the heating film 12 located in the first region a and a portion located in the second region B to be electrically connected to the heating film 12. Here, referring to fig. 7 and 9, the second extending portion 1322 overlaps at least a portion of the first extending portion 1312 in the circumferential direction of the receiving structure 11, so that the heating film 12 forms a vortex in the circumferential direction of the receiving structure 11 and generates heat.

In this embodiment, as shown in fig. 9, the first extension 1312 and/or the second extension 1322 may extend from the first end a of the receiving structure 11 to the second end b of the receiving structure 11.

Of course, in other embodiments, referring to fig. 13, fig. 13 is a schematic position diagram of the first electrode 131 and the second electrode 132 on the receiving structure 11 according to an embodiment of the present application. The second power supply portion 1321 may also be disposed at the second end b of the receiving structure 11, and the second extension 1322 extends from the second power supply portion 1321 to a position of the receiving structure 11 close to the first end a along the length direction C of the receiving structure 11, and is disposed at an interval from the first power supply portion 1311. In this embodiment, the first extending portion 1312 extends from the first power supply portion 1311 to a position near the second end b of the receiving structure 11, and is spaced apart from the second power supply portion 1321.

With reference to fig. 13, the number of the first extending portions 1312 and the number of the second extending portions 1322 are one, and the first extending portions 1312 and the second extending portions 1322 are oppositely disposed along the radial direction of the receiving structure 11; when the heating film 12 includes the first heating portion 121 and the second heating portion 122, the first extending portion 1312 and the second extending portion 1322 divide the heating film 12 into four main heat generating portions connected in parallel, and the expanded shape of each main heat generating portion includes, but is not limited to, a rectangle; such as square or rectangular, etc.

Referring to fig. 14, fig. 14 is a schematic diagram of positions of the first electrode 131 and the second electrode 132 on the accommodating structure 11 according to another embodiment of the present disclosure. It will be understood by those skilled in the art that, when the heating film 12 is a continuous film structure, the first extension 1312 and the second extension 1322 divide the heating film 12 into two main heat generating portions connected in parallel, and the expanded shape of each main heat generating portion includes, but is not limited to, a rectangle; such as square or rectangular, etc. It is understood that each of the main heat generating portions is located in the first area a and the second area B with different widths.

Of course, in other embodiments, the number of the first extending portions 1312 and/or the second extending portions 1322 may be plural, and the plural first extending portions 1312 and the plural second extending portions 1322 are alternately arranged along the circumferential direction of the receiving structure 11; so as to form a plurality of regions of different temperatures on the housing structure 11 in the circumferential direction thereof. Compared with a scheme in which the housing structure 11 forms two regions of different temperatures in the circumferential direction thereof, the circumferential length of the heating film 12 corresponding to each region in the circumferential direction of the housing structure 11 is reduced; as will be understood by those skilled in the art, in the case where the width of the heating film 12 in the longitudinal direction C of the housing structure 11 is constant, if the circumferential length of the heating film 12 of the corresponding region is decreased, the total resistance of the heating film 12 of the corresponding region is decreased; in this way, when the same voltage is applied to the heating films 12, the heating power of the heating film 12 in the region can be effectively increased, so that the power density of the region can be increased, and the heating speed can be effectively increased.

In particular, the number of first extensions 1312 and/or second extensions 1322 is an even number, such as two, four, or six, etc.

Specifically, the first power supply portion 1311 and the second power supply portion 1321 may be disposed on the surface of the substrate 111 facing away from the radiation layer 112 by sintering, or disposed on the surface of the first insulating layer 113 facing away from the radiation layer 112 by coating, deposition, or the like. The first and

second extensions

1312 and 1322 extend to the surface of the heating membrane 12 to contact the heating membrane 12 and achieve electrical connection therebetween. Specifically, the first electrode 131 and the second electrode 132 may be formed by coating or screen printing, and both may be made of a high-conductivity material.

In another embodiment, referring to fig. 15, fig. 15 is a schematic diagram illustrating a position of the first electrode 131 and the second electrode 132 on the receiving structure 11 according to another embodiment of the present application; the power feeding electrode 13 includes a first electrode 131, a second electrode 132, and a third electrode 133.

The first electrode 131 is disposed at the first end a of the housing structure 11, is disposed around the circumference of the housing structure 11, and is electrically connected to the first end a of the heating film 12 along the longitudinal direction C of the housing structure 11. Of course, in other embodiments, referring to fig. 16, fig. 16 is a schematic diagram illustrating positions of the first electrode 131 and the second electrode 132 on the receiving structure 11 according to still another embodiment of the present application; the first electrode 131 may also be disposed at a position of the base 111 near the first end a, i.e., a portion of the base 111 is exposed through the feeding electrode 13 and the heating film 12.

The second electrode 132 is disposed at the second end b of the receiving structure 11, is disposed around the circumference of the receiving structure 11, and is electrically connected to the second end b of the heating film 12 along the length direction C of the receiving structure 11. The second electrode 132 and the first electrode 131 are used to electrically connect with the positive (or negative) electrode of the power module 20.

The third electrode 133 is disposed between the first electrode 131 and the second electrode 132 along the length direction C of the housing structure 11, is disposed in a circle around the circumferential direction of the housing structure 11, and is electrically connected to the heating film 12. Specifically, the third electrode 133 may be disposed at a position corresponding to the centerline plane M of the receiving structure 11.

The third electrode 133 is specifically adapted to be electrically connected to the negative (or positive) electrode of the power module 20. After the first electrode 131, the second electrode 132 and the third electrode 133 are energized, the portion of the heating film 12 between the first electrode 131 and the third electrode 133 and the portion of the heating film 12 between the second electrode 132 and the third electrode 133 form an eddy current along the length direction C of the housing structure 11.

In a particular embodiment, the width of the heating film 12 between the first electrode 131 and the third electrode 133 is different from the width of the heating film 12 between the second electrode 132 and the third electrode 133 to form two regions of different temperatures as desired.

The heating element 10 that this embodiment provided, through infrared radiation heating aerosol generation goods 2, compare in resistance heating or electromagnetic heating's scheme, because the infrared ray has certain penetrability, do not need the medium, heating efficiency is higher, can effectively improve aerosol generation goods 2's preheating efficiency, and can effectively reduce aerosol generation goods 2 inside and outside temperature difference, thereby it is more even to the toast of aerosol generation goods 2, avoid appearing local high temperature and lead to aerosol generation goods 2 by the problem of scorching. Meanwhile, by arranging the heating film 12 so that the power density is different on both sides of the midpoint in the longitudinal direction C of the housing structure 11, it is possible to design a temperature field as desired, and to design other asymmetric high-temperature region positions easily. In addition, the housing structure 11 is divided into two regions having the same area by using a plane M perpendicular to the longitudinal direction C of the housing cavity 110 and passing through the midpoint as a dividing line, the resistance of the portion of the heating film 12 located in the first region a is different from the resistance of the portion located in the second region B, so that two regions having different temperatures are formed in the housing structure 11, and the position of the high-temperature region suitable for atomization of the aerosol-generating product 2 on the housing structure 11 is purposefully designed to increase the aerosol generation speed. In addition, the resistance of the portion of the heating film 12 located in the first area a is further made smaller than the resistance of the portion located in the second area B, so that the temperature of the first area a of the accommodating structure 11 is higher than that of the second area B, thereby effectively improving the atomization efficiency of the first area a and increasing the aerosol generation speed.

In a second embodiment, referring to fig. 17, fig. 17 is a transverse cross-sectional view of a heating assembly 10 provided in a second embodiment of the present application; a second heating element 10 is provided, which differs from the heating element 10 provided in the first embodiment described above in that: the radiation layer 112 is disposed on the outer surface of the sidewall of the substrate 111.

In this embodiment, as shown in fig. 17, when the radiation layer 112 is an insulating radiation layer, the heating film 12 is specifically disposed on a surface of the radiation layer 112 facing away from the substrate 111. Heat generated by the heating film 12 when energized is directly conducted to the radiation layer 112, the radiation layer 112 is heated to generate infrared rays, and the infrared rays penetrate through the transparent base 111 and enter the receiving cavity 110 to heat the aerosol-generating product 2 received in the receiving cavity 110. In this embodiment, the aerosol-generating article 2 may also be in direct contact with the transparent substrate 111 to conduct heat from the substrate 111 directly to the aerosol-generating article 2 for heating; alternatively, the aerosol-generating article 2 is spaced from the substrate 111.

When the radiation layer 112 is made of non-insulating material, as shown in fig. 18, fig. 18 is a transverse cross-sectional view of the heating element 10 according to another embodiment of the present application; to avoid short circuiting of the heating film 12; the surface of the radiation layer 112 facing away from the substrate 111 is also provided with a second insulating layer 114, the second insulating layer 114 being located between the radiation layer 112 and the heating film 12.

In a third embodiment, with reference to fig. 19, fig. 19 is a transverse cross-sectional view of a heating assembly 10 provided in accordance with a third embodiment of the present application; there is provided a further heating element 10, which differs from the heating element 10 provided in the previous embodiment in that: the housing structure 11 includes a base 111.

The base 111 has a hollow tubular shape, and the base 111 includes a main body and an infrared radiation material dispersed in the main body. The body forms a receiving cavity 110 and a proximal opening communicating with the receiving cavity 110 to receive the aerosol-generating article 2. The substrate 111 radiates infra-red light when heated to heat the aerosol-generating article 2. It is understood that in this embodiment, the substrate 111 itself is heated to radiate infrared light, and no infrared layer is added to the surface of the substrate 111. The substrate 111 may be a quartz tube.

Of course, in order to increase the amount of the radiated infrared rays to increase the heating rate, a radiated infrared layer may be further provided on the surface of the base 111; the details can be found in the above description, and are not described herein again.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A heating assembly, comprising:

a containment structure having a proximal opening for containing an aerosol-generating article therethrough and radiating infrared light when heated to heat the aerosol-generating article;

the heating film is covered on the containing structure in a surface shape and used for heating the containing structure when electrified; the heating film is configured to have different power densities on both sides of a midpoint in the length direction of the accommodating structure;

and a power supply electrode electrically connected to the heating film to supply power to the heating film.

2. The heating assembly of claim 1,

a plane perpendicular to the length direction of the accommodating structure and passing through the midpoint divides the surface of the accommodating structure into a first area and a second area; the second region is located on a side of the first region facing away from the proximal opening;

the heating film has a resistance density per unit area in the first region different from a resistance density per unit area in the second region.

3. The heating assembly of claim 2,

the heating film includes:

a first heating section provided in the first region;

4. The heating assembly of claim 3,

the first heating part and the second heating part are arranged in a circle around the circumferential direction of the accommodating structure, the material and the thickness of the first heating part and the second heating part are the same, and the widths of the first heating part and the second heating part in the length direction of the accommodating structure are different.

5. The heating assembly of claim 2,

6. The heating assembly of claim 5, wherein the heating film is disposed around the circumference of the receiving structure in a circle, and the heating film has a uniform material and thickness; the width of a portion of the heating film located in the first region is different from the width of a portion of the heating film located in the second region.

7. A heating assembly as claimed in claim 4 or 6, in which the width of the portion of the heating film in the first zone is greater than the width of the portion of the heating film in the second zone.

8. A heating assembly according to any of claims 1-6,

the heating film is rectangular after being unfolded along the circumferential direction of the accommodating structure.

9. A heating assembly according to any of claims 2-6,

the power supply electrode includes:

10. The heating assembly of claim 9, wherein the second power supply is located at a first end of the receiving structure, and the first extension and/or the second extension extend from the first end of the receiving structure to a second end of the receiving structure.

11. The heating assembly of claim 9, wherein the second power supply portion is located at the second end of the receiving structure, and the first extending portion extends from the first power supply portion to a position of the receiving structure near the second end and is spaced apart from the second power supply portion;

the second extending portion extends from the second power supply portion to a position, close to the first end, of the accommodating structure, and is arranged at an interval with the first power supply portion.

12. A heating assembly according to any of claims 2-6,

the power supply electrode includes:

13. A heating assembly according to any of claims 1-6,

the housing structure includes:

a substrate having a hollow tubular shape for housing the aerosol-generating article;

14. The heating assembly of claim 13,

the radiation layer is arranged on the inner surface of the side wall of the base body, and the heating film is arranged on one side of the base body, which is far away from the radiation layer; or

15. A heating assembly as claimed in any of claims 1 to 6, wherein the receiving structure comprises:

a base body having a hollow tubular shape and including a main body and an infrared radiation material dispersed in the main body; the substrate is for receiving an aerosol-generating substrate and, when heated, radiates infra-red light to heat the aerosol-generating article;

wherein, the heating film and the electrode are arranged on one side of the outer surface of the side wall of the substrate.

16. The heating assembly of claim 15, wherein the substrate is a quartz tube.

17. An aerosol-generating device, comprising:

a heating assembly as claimed in any one of claims 1 to 16;

and the power supply assembly is electrically connected with the heating assembly and used for supplying power to the heating assembly.

18. An aerosol-generating system, comprising:

an aerosol-generating device according to claim 17;

an aerosol-generating article.

19. An aerosol-generating system according to claim 18,

the aerosol-generating article is housed within a housing structure of the aerosol-generating device and is in direct contact with an inner surface of a sidewall of the housing structure; alternatively, the first and second electrodes may be,

the aerosol-generating article is housed within the housing structure and is spaced from an inner surface of a sidewall of the housing structure.